We get them here on occasion. They usually come ashore if injured- or sometimes on a rest stop.
The local (Napier) Marineland sealife park used to take them in if injured. Seen them during feeding time or when they've been moved from pen to pen. Not as visually impressive as Elephant seals, but they do have an impressive array of teeth.
Next time I go to cali I'll have to check them out if they are actually there, but I am pretty sure they don't go to such a warm climates. I live in Arizona so I very rarely see any wildlife bigger then a skinny coyote.